1. Genus Stephanomia Lesueur & Petit, 1807
   1. Species Stephanomia amphytridis Lesueur & Petit, 1807
   2. Subgenus Stephanomia (Forskalia) Köliker, 1853 accepted as Forskalia Kölliker, 1853
   3. Species Stephanomia atlantica Fewkes, 1882 accepted as Forskalia edwardsii Kölliker, 1853
   4. Species Stephanomia bijuga (Delle Chiaje, 1844) accepted as Nanomia bijuga (Delle Chiaje, 1844) (objective synonym)
   5. Species Stephanomia cara (A. Agassiz, 1865) accepted as Nanomia cara Agassiz, 1865
   6. Species Stephanomia contorta Milne Edwards, 1841 accepted as Forskalia contorta (Milne Edwards, 1841)
   7. Species Stephanomia convoluta Moser, 1925 accepted as Resomia convoluta (Moser, 1925) (basionym)
   8. Species Stephanomia excisa Leuckart, 1853 accepted as Forskalia contorta (Milne Edwards, 1841) (unaccepted > junior subjective synonym)
   9. Species Stephanomia foliacea Quoy & Gaimard, 1833 accepted as Halistemma foliacea (Quoy & Gaimard, 1833) (basionym)
   10. Species Stephanomia hippopoda Quoy & Gaimard, 1833 accepted as Hippopodius hippopus (Forsskål, 1776) (synonym)
   11. Species Stephanomia nereidum Haeckel, 1888 (unaccepted > nomen nudum)
   12. Species Stephanomia orthocanna Kramp, 1942 accepted as Marrus orthocanna (Kramp, 1942)
   13. Species Stephanomia picta (Metschnikoff, 1870) accepted as Nanomia bijuga (Delle Chiaje, 1844) (subjective synonym)
   14. Species Stephanomia pictum (Metschnikoff, 1870) accepted as Stephanomia picta (Metschnikoff, 1870)
   15. Species Stephanomia prolifera Milne Edwards, 1841 accepted as Forskalia edwardsii Kölliker, 1853
   16. Species Stephanomia rubra (Vogt, 1852) accepted as Halistemma rubrum (Vogt, 1852)
   17. Species Stephanomia similis (Margulis, 1977) accepted as Resomia similis (Margulis, 1977) (synonym)
   18. Species Stephanomia uvaria Lesueur, 1815 accepted as Apolemia uvaria (Lesueur, 1815) (basionym)
   19. Species Stephanomia ophiura Delle Chiaje, 1831 (uncertain > taxon inquirendum)
2. Genus Sphaeragalma Margulis, 1976 accepted as Stephanomia Lesueur & Petit, 1807
   1. Species Sphaeragalma rotunda Margulis, 1976 accepted as Stephanomia amphytridis Lesueur & Petit, 1807

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